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Putting a new motherboard into Dell Inspirion 8500?
(slrpnk.net)
Share your self-made stuff and half-baked projects here.
Also check out !diy@beehaw.org
There is also a related XMPP chat.
Nobody makes their own PCBs at home anymore. You likely order them from JLCPCB or pcbway. Look up KiCAD on how to design them.